Only certain communities. Such as... the general open source community. And maybe even software developers in general. I can definitely see this being misunderstood by end users or others because licensing and the related terminology is just plain confusing, but as long as I can remember it was very clear that there's a difference between shared source, 'available' source, and open source.
The same exact arguments can be made about free software, only worse because colloquially users have traditionally confused it with the term freeware.
Right, one of the strong arguments in favor of the term was that “open source” had no pre-existing meaning to constantly struggle against. Thus my frustration with the persistent confusion, where by “confusion” I mean “con men falsely claiming that their software is open-source in order to free-ride on the goodwill the open-source community has earned through decades of hard work and persistence against impossible odds in order to guarantee basic human rights to everyone in an increasingly computer-mediated world.”
I don't know if this is true universally, or only in certain communities.